Gabriel zahikian



No Modem Y.

- G. ZAHIKIAN.

STEAM GENERATOR.l f

No. 518,016. Patented Apr. 1o, 1894'.

I F/as/ f r: Y.

PATENT GABRIEL ZAHIKIAN, OF LONDON, ENGLAND.

STEAM-G EN ERATO R.

SPECIFICATION forming part of Letters Patent No. 518,016, dated April 10, 1894.

Application led May 22, 1893. Serial No. 475,033. (No model.)

To a/ZZ whom it may concern:

Be it known that I, GABRIEL ZAHIKIAN, a subject of the Emperor ot' Russia, residing at London, England, have invented certain new and useful Improvements in Steam-Generators; and I do hereby declare the following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

My invention relates to improvements in steam generators, and it consists of certain novel features hereinafter described and claimed.

Reference is had to the accompanying drawings, in which the same parts are indicated by the same letters throughout the several views.

Figure 1. represents a central longitudinal section of a boiler of ordinary construction provided with my improved circulation de- Vfleeting device. Fig. 2 represents an enlarged section of one of the Watertubes shown in Fig. 1.- Fig. 3. represents a frontview of one of the said tubes showing the circulation delecting device fitted therein. Fig. 4t represents an enlarged perspective view of the device detached from c the tubes. Fig. 5 represents a central longitudinal section of a boiler of well known construction, having double tubes tted with my improved circulation deflecting device.

ble tubes fitted with 4my improved device. Fig. 7 represents an end view of the said tubes showing the device in position; and Fig. 8 represents an enlarged perspective View of the form of device used with double tubes as shown in Figs. 5, 6, and 7.

In the water inlet end of each tube T, ade- Iiecting device is inserted of such a shape as posed to the re.

Fig. 6 represents an en' larged sectional view ot' the ends of said douand T in Figs. 5 and 6 theclips C may be replaced bya ring D, as shown in Fig. 8, the said ring being adapted to slip over the outer end of the inner tube; and the curved blades B tit snugly in the annular space between the two tubes and not only impart a helicoidal direction to the water, but also serve to steady and center the otherwise unsupported end of the inner tube. This ring D is provided with inward projecting clips to prevent the motion of the water from dragging the dei-lecting device along the tubes G, it being important that it should be at the water inlet end of the tube exposedto the heat of the furnace. The flow of the water in the boiler is indicated in each case by the arrows. The function of this detlecting device placed at the waterinlet end of the tube is to cause the fluid to enter in a vertical or helicoidal direction, the heavier particles of water are thrown outward by centrifugal action, while the lighter particles of steam seek the center ot the water like chips and foam in a whirlool. :Prater to be evaporated next the heating surface and to keep the steam away therefrom, the steam thus finds a passage upward along a line approximating the axis of the tube ex- In this way the maximum heating effect is obtained and the tubes are protected against overheating and strain. It will be obvious that a similar device might be applied to the inlet ends of horizontal or vertical tubes through which there is a iiow of water. s i

I claim as' new- In a steam generator of the character described, the combination with a water tube receiving water at one end, and discharging it. wholly or partly evaporated at the other end, of a device consisting essentially of a plurality of helicoidal blades set transversely in said tube, and clips adapted to engage said tube and hold said device in position, substantially as described.

GABRIEL ZAHIKIAN. Witnesses:

FREDERIC PRINCE, WILLIAM MUIR.

The result of this action is to keep the 

